Sheaffer Touchdown Nib Unit. (Medium) N510 £35.00 Quantity: at £35.00 each Add To Basket Summary; Manufacturer: Sheaffer. Designation: Touchdown. Origin: USA. Material: 14ct Gold. Dates from (approx): 1960. Overall Length: 54mm including the threaded section and sac nipple. Writing Width: Medium. Notes: All sizes and measurements are approximate. Any replacement nib may need some adjustment when fitted to the pen. We can fit this nib as part of a service on your pen, email us for details. Postage in the UK is free on this item!